Collect the requests-per-second counter

[hae-andrew-young]

Are you requesting automatic instrumentation for a framework or library? Please describe.
Library dd-trace-dotnet

Is your feature request related to a problem? Please describe.
The profile does not collect the requests-per-second counter.

Describe the solution you'd like
Please start collecting the requests-per-second counter. It has been available since .NET Core 3.1 https://learn.microsoft.com/en-us/dotnet/core/diagnostics/available-counters#microsoftaspnetcorehosting-counters

Describe alternatives you've considered
n/a

Additional context
n/a

[lucaspimentel]

Hello, @hae-andrew-young. To confirm, this is a feature request to collect an additional metric using the .NET Runtime Metrics feature, correct?
https://docs.datadoghq.com/tracing/metrics/runtime_metrics/dotnet/

[lucaspimentel]

Related: #4468